changing gear at 3000 revs?

1. Psycho18 Established Member Joined: Apr 2008 west Mids Posts: 1775 Mk1 White VTS

   #1 26th August 2009, 14:22

   i believe peak torque on a saxo vtr mk1 is 3000rpm. So would the car be quicker if i was changing gears at 3000rpm or going right up the red line and then changing gear. Just a bit confused
2. user_16990 Frequent Poster Joined: Jul 2007 Posts: 810 2001 VTS

   #2 26th August 2009, 14:26

   Lol.
   
   You want to be using all of the cars power band. The optimum time to change will be somewhere between peak torque and peak bhp. Most likely a few hundred rpms after peak bhp so you fall right back into the power band.

   1 user thanked this post: Psycho18
3. user_15516 Saxperience Post Whore Joined: Apr 2007 Posts: 6640 Integra DC5R & VTS

   #3 26th August 2009, 14:26

   Peak torque is made before peak power. You'll want to keep the revs above 3000 otherwise you'll be 'dropping out the power' so to speak.
4. williamsvts Saxperience Post Whore Joined: Feb 2006 northumberland Posts: 7693 pulsar gtir, mk4 astra sxi

   #4 26th August 2009, 14:30

   is this not just common sense? you can feel the car is alot quicker above 3k unless your driving a densil.
5. Psycho18 Established Member Joined: Apr 2008 west Mids Posts: 1775 Mk1 White VTS

   #5 26th August 2009, 14:35

   yeah i hear you. Thanks for the info
6. user_26566 Established Member Joined: Aug 2008 harlow/ essex Posts: 1414 stealth Vtr/S

   #6 26th August 2009, 15:42

   Fail.....
7. user_26890 Frequent Poster Joined: Sep 2008 Stoke-On-Trent Posts: 787 Saxo VTR MK2

   #7 26th August 2009, 15:45

   Quote:

   Originally Posted by toms_vtr Fail.....

   point in that?
8. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

   #8 26th August 2009, 16:23

   Quote:

   Originally Posted by williamsvts is this not just common sense? you can feel the car is alot quicker above 3k unless your driving a densil.

   driving like a densil tehehe if only rep was still here
9. benii Infrequent Poster Joined: Jul 2009 Trowbridge, Wiltshire Posts: 179 Silver Saxo VTR

   #9 26th August 2009, 16:26

   Quote:

   Originally Posted by tommyhine5 point in that?

   +1
10. Psycho18 Established Member Joined: Apr 2008 west Mids Posts: 1775 Mk1 White VTS

    #10 26th August 2009, 19:02

    so far i've had some nobs saying fail... yet not really any proper info. What is the optimum gear change? So far i understand that most of the power is above 3000rpm that is blatantly obvious. But somebody told me that the optimum gear change is at the peak torque 3000rpm. So you guys are saying if i find out where my peak bhp is at and change gear just above it the engine will be at its optimum
11. Docsamty Frequent Poster Joined: Jan 2009 Oxfordshire - Banbury Posts: 713 S1 Rallye

    #11 26th August 2009, 19:15

    I believe peak torque is as you said at 3000RPM, and peak power is around 5600RPM.

    1 user thanked this post: Psycho18
12. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

    #12 26th August 2009, 19:17

    vtr rougly 5.8k
    vts around 6.5k

    1 user thanked this post: Psycho18
13. williamsvts Saxperience Post Whore Joined: Feb 2006 northumberland Posts: 7693 pulsar gtir, mk4 astra sxi

    #13 26th August 2009, 19:32

    Quote:

    Originally Posted by Psycho18 so far i've had some nobs saying fail... yet not really any proper info. What is the optimum gear change? So far i understand that most of the power is above 3000rpm that is blatantly obvious. But somebody told me that the optimum gear change is at the peak torque 3000rpm. So you guys are saying if i find out where my peak bhp is at and change gear just above it the engine will be at its optimum

    tbh, i think its a stupid question that gets asked every 2 days. drive your car and see what feels quicker instead of asking all us E-racers
14. Psycho18 Established Member Joined: Apr 2008 west Mids Posts: 1775 Mk1 White VTS

    #14 26th August 2009, 19:35

    i'm on the forums often and have never seen anyone ask about the optimum time to change gear. However if you do then fair enough sorry to have bothered you mate.
15. jasonwellwicked Regular Poster Joined: Jan 2007 On a road near you! Posts: 336 Saxo mk2 VTR

    #15 26th August 2009, 19:49

    Optimum time to change gear:
    
    1) For fuel efficiency - as early in the rev range as possible (realistically probs 2.5 to 3k)
    2) For speed - Peak torque at 3,500rpm, Peak power at 5,500 (IIRC) thus as above change at 5,700rpm ish

    1 user thanked this post: theecho
16. edindude Regular Poster Joined: Aug 2009 edinburgh Posts: 265 saxo sx 1.1i fiesta flame 1.4

    #16 26th August 2009, 20:49

    in my 1.1 i change at 4k will that thrash the engine lol
17. Lucas_LFC Frequent Poster Joined: Mar 2009 Northern Ireland - Co. Londonderry Posts: 540 Ep3 type r + Saxo VTS Old: '89 205 1.6 GTi

    #17 27th August 2009, 00:31

    Quote:

    Originally Posted by Sparco_Tom vtr rougly 5.8k vts around 6.5k

    what is the 1.4 then???
    
    cheers
18. williamsvts Saxperience Post Whore Joined: Feb 2006 northumberland Posts: 7693 pulsar gtir, mk4 astra sxi

    #18 27th August 2009, 09:21

    Quote:

    Originally Posted by Psycho18 i'm on the forums often and have never seen anyone ask about the optimum time to change gear. However if you do then fair enough sorry to have bothered you mate.

    few here
    
    http://www.saxperience.com/forum/sea...archid=2935068